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Cylindrical cell with contact lugs

專利號
US11178767B2
公開日期
2021-11-16
申請人
VARTA Microbattery GmbH(DE Ellwangen Jagst)
發(fā)明人
Marc Oliver Nestle; Sunil Siddannavar
IPC分類
H05K1/00; H05K1/14; H01M50/109; H01M50/543
技術(shù)領(lǐng)域
lug,subsection,contact,cell,section,in,expansion,housing,conductor,face
地域: Ellwangen Jagst

摘要

A cylindrical cell includes a. a cylindrical housing enclosing an interior space and composed of a first and a second metal housing part, wherein the housing includes, at its axial ends, a first planar end face and a second planar end face connected to one another by an annular casing, b. a positive electrode and a negative electrode, at least one of which can intercalate and/or deintercalate lithium ions, wherein the positive electrode electrically connects to the first housing part directly or via a separate electrical conductor, and the negative electrode electrically connects to the second housing part directly or via a separate electrical conductor, c. a first contact lug configured as a sheet-metal part that is welded onto the first end face and which has a planar section extending in a plane parallel to the first end face, and d. a second contact lug configured as a sheet-metal part that is welded onto the second end face and has a planar subsection extending in a plane parallel to the second end face and has a subsection angled away from the plane and extends as far as into the plane of the planar section, wherein the angled-away subsection includes an expansion section in which the second contact lug expands in the main direction of extent in a targeted and predictable manner under a defined tensile loading in its main direction of extent.

說明書

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  • b. The housing has, in the casing, a hole which can serve to vent the interior space.
  • With preference, the features a. and b immediately above are implemented in combination with one another.

    Further particularly preferably, the cell is additionally distinguished by the immediately following a.:

      • a. The cell is fixed on a printed circuit board via the contact sections.

    Further features, details and advantages can be found in the appended claims and the abstract, the wording of both of which is incorporated in the content of the description by reference, the following description of preferred examples and also on the basis of the drawings.

    The cell 100 illustrated in FIGS. 1A-1F has a cylindrical housing composed of the housing parts 101 and 102. The cell 100 is a button cell. The first housing 101 forms the positive pole of the cell 100, and the second housing part 102 forms the negative pole. At its axial ends, the housing comprises the planar first end face 103 and the planar second end face 104. The end faces are connected to one another via the annular casing 105.

    The cell 100 is a lithium-ion cell. An electrode separator winding (not illustrated), similar to those described in WO 2010/089152 A1, is arranged in the housing.

    權(quán)利要求

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